73512273097 has 4 divisors (see below), whose sum is σ = 73833287620. Its totient is φ = 73191258576.

The previous prime is 73512273089. The next prime is 73512273157. The reversal of 73512273097 is 79037221537.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79037221537 = 135181 ⋅584677.

It can be written as a sum of positive squares in 2 ways, for example, as 57992345856 + 15519927241 = 240816^2 + 124579^2 .

It is a cyclic number.

It is not a de Polignac number, because 73512273097 - 2³ = 73512273089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73512273697) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160506918 + ... + 160507375.

It is an arithmetic number, because the mean of its divisors is an integer number (18458321905).

Almost surely, 2^73512273097 is an apocalyptic number.

It is an amenable number.

73512273097 is a deficient number, since it is larger than the sum of its proper divisors (321014523).

73512273097 is a wasteful number, since it uses less digits than its factorization.

73512273097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321014522.

The product of its (nonzero) digits is 555660, while the sum is 46.

The spelling of 73512273097 in words is "seventy-three billion, five hundred twelve million, two hundred seventy-three thousand, ninety-seven".